Mat.No. 1.2721, DIN 50NiCr13

Designation by Standards

Chemical Composition (in weight %)

Description
Cold work tool steel. Air or oil hardenable steel with good machinability and high toughness.

Applications
Cold heading dies, hobbing punches, checkering diesm cutlery dies. 

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10³ x N/mm²]: 210 
Density [g/cm³]: 7.87
Thermal conductivity [W/m.K]: 30.0, 31.2 (at 350^oC), 31.8 (at 700^oC)

Soft Annealing
Heat to 610-650^oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 250.

Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx. 650^oC, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening
Harden from a temperature of 840-870^oC followed by air or oil quenching or warm bath quenching 180-220^oC. Hardness after quenching is 59 HRC.

Tempering
Tempering temperature: See the data bellow.

Tempering Temperature (^oC) vs. Hardness (HRC)

Tempering Diagram

Forging
Hot forming temperature: 1100-850^oC. 

Machinability
No data.

Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.